SAT Subject Test Mathematics Level 2

36 . If x^2 − 7y = 8, x − y = 1, and y > 0, what is the value of y?

(A) 1.64

(B) 4.78

(C) 5.64

(D) 6.14

(E) 7.28

37 . If for x ≥ 8, then for the values x of its domain, f−1(x) =

(A) 8(7x)

(B) 7(8x)

(C) 8(7x+1)

(D)

(E)

38 . If x 1 = 2 and , then x 4 =

(A) 3.46

(B) 4.47

(C) 5.29

(D) 8.49

(E) 10.39